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Tantalum
Tantalum

Samarium
Samarium



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Tantalum
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Samarium

Atomic Structure of Tantalum and Samarium

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1 Atomic
1.1 Atomic Number
7362
3 117
1.2 Electron Configuration
[Xe] 4f14 5d3 6s2
[Xe] 4f6 6s2
1.3 Crystal Structure
Body Centered Cubic (BCC)
Rhombohedral (RHO)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
7362
3 117
1.4.2 Number of Neutrons
10888
4 184
1.4.3 Number of Electrons
7362
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
146.00 pm180.00 pm
112 265
1.5.2 Covalent Radius
170.00 pm198.00 pm
96 260
1.5.3 Van der Waals Radius
200.00 pm229.00 pm
139 348
1.6 Atomic Weight
180.95 amu150.36 amu
6.94 294
1.7 Atomic Volume
10.90 cm3/mol19.95 cm3/mol
1.39 71.07
1.8 Adjacent Atomic Numbers
1.8.1 Previous Element
1.8.2 Next Element
1.9 Valence Electron Potential
110.00 (-eV)44.80 (-eV)
8 392.42
1.10 Lattice Constant
330.13 pm362.10 pm
228.58 891.25
1.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
1.12 Lattice C/A Ratio
NANA
1.567 1.886